It's always important to keep your cool — even under the worst travel conditions.

Last week, a father and daughter were removed from a Frontier Airlines flight that from Orlando to St. Louis after an eight-hour delay. The pair had been swearing and the airline staff reportedly felt threatened by the conversation.

According to News 6, Eric Miller, 70, and his daughter Whitney Miller, 25, were having a private conversation about the delay when airline staff "aggressively" approached them.

Eric Miller said that a flight attendant leaned in close and asked, "Do we have a problem?"

Whitney added, clarifying, the question was, "Do you have a problem? Do you need to be removed from this aircraft?"

The pair asked what was happening with the delay but did not get any information, which is when the interaction apparently became heated.

Another passenger took video of the pair being removed from the aircraft. Eric Miller can be heard saying, "This is the most loathsome experience I can actually say I've indulged in 70 years of flying on an airplane. This is absolutely incredible."

Miller also mentions in the video they had been waiting for the plane to take off for a grand total of 12 hours at the time of their removal.

A spokesperson for the airline told The Independent that the two were swearing and acting disrespectfully and threateningly towards staff, which is why they were removed.

"Our flight attendants are customer service and safety professionals who are trained to recognise situations that may impact comfort and safety of passengers and crew on-board our aircraft, the spokesperson said. "The behaviours and comments exhibited by these passengers prior to departure were inappropriate; and as a result they were asked to leave our aircraft."